evaporation pan

1) A standard National Weather Service Class A pan (48-inch diameter by 10-inch deep) used to estimate the reference crop evapotranspiration rate. Water levels are measured daily in the pan to determine the amount of evaporation. 2) A pan or container containing water. Water evaporated from the device is measured and adjusted by a coefficient to represent estimated crop water used during the period.

Authorization Path: 2.4.5.2.20.15